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212626025 = 5210977753
BaseRepresentation
bin11001010110001…
…10101001101001
3112211002112001222
430223012221221
5413413013100
633033151425
75161201643
oct1453065151
9484075058
10212626025
11aa027097
125b25b575
1335088221
142034b893
1513a00485
hexcac6a69

212626025 has 12 divisors (see below), whose sum is σ = 263930652. Its totient is φ = 169923840.

The previous prime is 212626009. The next prime is 212626027. The reversal of 212626025 is 520626212.

212626025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2347024 + 210279001 = 1532^2 + 14501^2 .

It is not a de Polignac number, because 212626025 - 24 = 212626009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212625985 and 212626003.

It is not an unprimeable number, because it can be changed into a prime (212626027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23549 + ... + 31301.

It is an arithmetic number, because the mean of its divisors is an integer number (21994221).

Almost surely, 2212626025 is an apocalyptic number.

212626025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212626025 is a deficient number, since it is larger than the sum of its proper divisors (51304627).

212626025 is a wasteful number, since it uses less digits than its factorization.

212626025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860 (or 8855 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 212626025 is about 14581.7017182495. The cubic root of 212626025 is about 596.8595402737.

The spelling of 212626025 in words is "two hundred twelve million, six hundred twenty-six thousand, twenty-five".

Divisors: 1 5 25 1097 5485 7753 27425 38765 193825 8505041 42525205 212626025